Read xml and redirect traffic

You can use a stream profile with this type of irule :

when HTTP_REQUEST {
    Disable the stream filter for all requests
   STREAM::disable
}
when HTTP_RESPONSE {  
    Check if response type is text  
    if { ([HTTP::header value Content-Type] contains "text/html" )
       Match an http://*example.com string and replace it with nothing yet
      STREAM::expression {&<\w* error=\"0\">&&}
       Enable the stream filter for this response only  
      STREAM::enable  
   }  
}   
when STREAM_MATCHED {  
    Check if the matched string meets some condition that can't easily be checked for using a single regex in STREAM::expression
   if {[STREAM::match] starts_with "